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Si II Lines in the Shell of ζ Tau
Published online by Cambridge University Press: 14 August 2015
Abstract
Non-LTE strengths of Si II lines were computed in an effort to reproduce the observed strengths of Si II lines in the shell spectrum of ζ Tau. This effort was unsuccessful, probably because it assumed that the shell could be represented by a finite, plane-parallel slab. The main conclusion of this study, then, is that in order to understand the shell spectra of Be stars, a more realistic geometry must be assumed, in which the shell is represented by a thick disk.
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- Part IV: Line Formation in Expanding Atmospheres
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- Copyright © Reidel 1976
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